Things that are matter: air, food, water, dirt
Mass - A measurement of the amount of
matter in a object (grams).
Volume - A measurement of the amount
of space a substance occupies.
Things that are not matter: heat, light, energy, temperature
States of Matter
Law of Conservation of Matter
Solid - A substance with definite volume
and shape. Solids do not flow and therefore do not conform to the
shape of their containers.
Liquid - A substance with definite volume
but without definite shape. Liquids flow freely and therefore conform
to the shape of the walls of their container; liquids cannot, however,
expand to fill their container.
Gas - A substance with no definite volume
or shape. Gases flow freely; gases can expand to fill their container,
or they can be compressed into a smaller container.
Plasma - A highly ionized gas containing
an approximately equal number of positive ions and electrons.